_______,released by damaged tissue and mast cells,causes capillaries to dilate and become more permeable.
A) Histamine
B) Serotonin
C) Lysozyme
D) Complement
Correct Answer:
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Q55: B cells are responsible for
A)cell-mediated immunity.
B)inflammation.
C)antibody-mediated immunity.
D)nonspecific
Q56: Which of the following is a form
Q57: Which of the following produce antibodies?
A)T lymphocytes
B)Macrophages
C)B
Q58: Plasma cells produce
A)antibodies.
B)histamines.
C)T cells.
D)antigens.
Q59: Lysozyme is found in
A)tears.
B)saliva.
C)urine.
D)both tears and saliva.
Q61: HIV-1 infects
A)B cells.
B)CD4 (helper T cells).
C)CD8 (cytotoxic
Q62: Cytotoxic T cells may attack
A)antigen-bearing cells.
B)cancer cells.
C)virus-infected
Q63: T cells are responsible for
A)antibody-mediated immunity.
B)cell-mediated immunity.
C)plasma
Q64: Which type of antibody is involved in
Q65: What happens after a T cell has
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